21449491022 has 32 divisors (see below), whose sum is σ = 34390464192. Its totient is φ = 9998416384.

The previous prime is 21449490991. The next prime is 21449491027. The reversal of 21449491022 is 22019494412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21449491027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1657208 + ... + 1670100.

It is an arithmetic number, because the mean of its divisors is an integer number (1074702006).

Almost surely, 2^21449491022 is an apocalyptic number.

21449491022 is a deficient number, since it is larger than the sum of its proper divisors (12940973170).

21449491022 is a wasteful number, since it uses less digits than its factorization.

21449491022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13372.

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 21449491022 in words is "twenty-one billion, four hundred forty-nine million, four hundred ninety-one thousand, twenty-two".